O

O

• Obregonia
• Ochagavia
• Ochna
• Ocimum
• Odontioda
• Odontocidium
• Odontoglossum
• Odontonema
• Odontonia
• Oemleria
• Oenanthe
• Oenothera
• Olea - Olive
• Olearia
• Olneya
• Olsynium
• Omphalodes
• Omphalogramma
• Oncidium
• Onoclea
• Ononis
• Onopordum
• Onosma
• Oophytum
• Ophiopogon
• Ophrys
• Ophthalmophyllum
• Oplismenus
• Opuntia
• Orbea
• Orbeopsis
• Orchis
• Oreocereus
• Origanum
• Orixa
• Ornithogalum
• Ornithophora
• Orontium
• Orostachys
• Oroya
• Ortegocactus
• Orthophytum
• Orthrosanthus
• Orychophragmus
• Oryza
• Osbeckia
• Osmanthus
• Osmarea
• Osmaronia
• Osmunda
• Osteomeles
• Osteospermum
• Ostrowskia
• Ostrya
• Othonna
• Ourisia
• Oxalis
• Oxydendrum
• Ozothamnus

Obregonia denegrii - Artichoke Cactus

The Artichoke cactus (Obregonia denegrii) is a species of cactus. It is the sole species of the genus Obregonia, named after Álvaro Obregón. This rare species resembles an inverted green pine cone with a wooly center. It grows... more >>>

Abelia

Abelia is a genus of about 15-30 species and many hybrids in the honeysuckle family Caprifoliaceae, in the part of that family split off by some authors in the segregate family Linnaeaceae. The Angiosperm Phylogeny Group considers Linnaeaceae... more >>>

Nierembergia

Nierembergia is a genus of plants in the Nightshade family.


Species
Nierembergia rivularis (Whitecup) is a species of ornamental plant in the Solanaceae family, which is native to South America.
more >>>

Gevuina avellana

Gevuina avellana is an evergreen tree of the family Proteaceae, up to 20 meters (65 feet) tall. It is native to southern Chile and Argentina. It is found from sea level to 700 meters (2300 feet) above sea level. Its distribution extends from... more >>>

Malva

Malva is a genus of about 25–30 species of herbaceous annual, biennial, and perennial plants in the family Malvaceae (of which it is the type genus), one of several closely related genera in the family to bear the common English name... more >>>